Robert Downey Jr and wife Susan have named their daughter Avri Roel Downey. Pic/Santa Banta

The 49-year-old actor shared the news on Facebook.

"Yep... Avri Roel Downey joined the party at 3:22 a.m. on November 4th... She's 7lbs even, spans 20 inches, and is accompanied by a variety of Susan's traits that have seemingly overwritten my 'junk DNA.' I'll post pics here and there when I'm not too busy staring...," he wrote.

Robert Downey Jr, who also has a 21-year-old son, Indio, from a previous marriage, revealed he can't stop taking pictures of the latest addition to his family.

"After 9 months of intensive development, Team Downey is pleased to announce our 2014 fall/winter project. Principal photography commenced 11-14 and will continue until she says,'Dad! You are embarrassing me... I'm 30, this has gotta stop'," he added.